Phant



UNITED STATES PATENT OFFICE.

DAVID S. OLIPI-IANT, OF TORONTO, CANADA.

PROCESS OF MARKING TEXTILE FABRICS.

SPECIFICATION forming part of Letters Patent No. 443,375, dated December23, 1890.

Application filed April 11, 1890. Serial No. 347,528. (No specimens.)

To all whom it may concern:

Be it known that I, DAVID SEWELL OLI- PHANT, of the city of Toronto, inthe county "of York, in the Province of Ontario, Canada,

have invented a certain new and Improved Process of Marking TextileFabrics, of which the following is a specification.

The object of the invention is to provide a process for indeliblymarking textile fabrics; and it consists in the employment of certainmaterials in the mannerhereinafter more particularly explained, and thendefinitely pointed out in the claim.

In carrying out my process I make use of a marking-fluid and a mordant.The markiug-fluid is prepared as follows: I take three d rams andthirty-six grains of chloride of aniline, five drams of water, threedrains and thirty-six grains of mucilage, and one dram and forty-eightminims or drops of glycerine, and thoroughly mix together, shaking thesame daily for about two weeks, when it is ready for use. The mo rdantis prepared as follows: Eight grains of bichromate of potash, one ounceof heavy mueilage, and three ounces of pure water are mixed together.This niordant is first applied to the fabric to be marked by a brush orotherwise, and when the fabric is dry the desired marking is done withthe marking-fluid by the use of a pen, stencil, or any appropriatemeans. When the ink is dry, the mordaut may be readily washed out ineither hot or cold water.

I prefer that the mordant and ink or marking-fluid should both beprepared in substantially the above proportions, and care should betaken not to mix them together, as their mixture would make a fluid thatwould quickly fade and become thick and useless for writhat I claim asmy invention is The within-described process of marking textile fabrics,the same consisting in applying thereto a solution composed ofbichromate of potash, mucilage, and water, and, after drying, writingupon the prepared fabric with an ink composed of chloride of aniline,water, muoilage, and glycerine, substantially as specified.

Toronto, February 18, 1890.

DAVID S. OLIPHANT.

In presence of- HUsoN W. M. MURRAY, F. G. A. WRIGHT.

